My partner and I used Eric (firstname.lastname@example.org) for our transfers to and from the airport .We stayed at the Mercure on Remin Square. Eric provided us with an excellent service . He was prompt with his emails and professional in his approach. It was well worth the 220 yuan each way as it is a fair drive to and from the airport and with early morning flights , less stressful than trying to catch a bus or taxis. No tip was offered nor was it expected.